An unprecedented number of individuals are currently on the move across national boundaries, and an increasing number of people exercise their occupation in two or more countries. The chains of transnational movements have also lengthened and spread considerably. People may leave one country, for various reasons, move to a second, and then either return to their initial home country, or move on to a third. They may also live in one country and cross a national border on a regular basis to work in another.
While considerable attention has been paid by researchers and policy-makers to the drivers and patterns of border-crossing migration, an analysis of the characteristics of temporary transnational mobility has been largely lacking. In February 2014 a world-wide research project Transnational Migration in Transition: Transformative Characteristics of Temporary Mobility of People (EURA-NET) was launched by the European Commission to attain an understanding of the current characteristics and related policy impact of temporary transnational migration and mobility.